Lecture Exam 3 : Fill-In-The-Blank

Lecture Exam 3: Fill-In-The-Blank

Striations are visible when ______ and _____ muscle tissues are examined microscopically.

skeletal; cardiac

The specialized region of sarcolemma that is located at a neuromuscular junction is called the _____.

motor end plate

The _______ ligament limits hyperextension of the knee and prevents the anterior sliding of the tibia on the femur.

anterior cruciate

The name of the type of joint where a tooth fits into a socket is _______.

gomphosis

_______ is the respiratory pigment found in muscle cells which pulls in and stores oxygen for use during contraction.

myoglobin

________ is the built-in rythmic activity of cardiac muscle and some smooth muscle tissue.

autorythmicity

_______ joints have no synovial caity and the bones are held together by cartilage.

cartilaginous

_____ is the thick filament involved in skeletal muscle contraction.

myosin

______ released from the sarcoplasmic reticulum must bind troponin if muscle contraction is to occur.

calcium

______ joints have fluid filled cavity and bone are united by dense irregular connective tissue of an articulae capsule.

synovial

Articular cartilage recieves nutrients and oxygen from the _____ ______.

synovial fluid

This bacterial toxin blocks exocytosis of synaptic vesicles at the neuromuscular junction. _____

botox

The neurotransmitter released at a neuromuscular junction (in skeletal muscle) is ______.

acetylcholine

This protein blocks the myosin head from binding to actin when the muscle is at rest. ______

tropomyosin

______ discs in cardiac muscle contain both desmosomes and gap junctions.

intercalated

Neurotransmitters are stored in ______ _____ within the motor neuron ending and are released into the synaptic cleft allowing them to bind receptors on the motor end plate.

synaptic vesicles

A sustained minimal contraction in a skeletal muscle that does not produce movement is called muscle _____

tone

Additional muscle energy is stored in _____ _____ which transfers stored energy to ADP making ATP.

creatine phosphate

________ are stored in synaptic vesicles within the motor neuron ending and are released into the synaptic cleft allowing them to bind recpetors on the motor end plate.

neurotransmitters

______ is a subcutaneous layer of dense connective tissue that is wrapped around groups of skeletal muscles.

fascia

The _______ is the contracting unit the extends from Z line to Z line.

sarcomere

______ _____ is a result of over exercised muscles which lose their abilities to contract.

muscle fatigue

_____ ______ is hyaline cartilage that covers the articulating surface of bone reducing the friction.

articular cartilage

______ must bind the myosin head in order for it to bind actin.

ATP

The general anatomical term for the regions of contact between bones is joints ________.

articulations

______ joints have no synovial cavity and the bones are held together by dense irregular connective tissue rich in collagen.

fibrous

The ______ is a fluid-filled closed sacs containing synovial fluid located between skin and underlying bone which cushions and aids in movement of tendons.

bursa

_______ joints allow for the most possible movements

ball-and-socket

______ is the thin filament involved in skeletal muscle contraction.

actin

The muscle fibers that are oxidative and resistant to fatgue are the slow and fast _______ fibers.

oxidative

______ muscle cells do not contain sarcomeres.

smooth

This protein binds calcium which causes a conformational change unblocking the myosin head binding site on actin. ______

troponin

Calcium is released from the ______ ______ during skeletal muscle contraction.

sarcoplasmic reticulum

______ discs in cardiac muscle contain both desmosomes and gap junctions.

intercalated